2 # linux/arch/x86/boot/compressed/Makefile
4 # create a compressed vmlinux image from the original vmlinux
7 targets
:= vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
8 vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4
10 KBUILD_CFLAGS
:= -m
$(BITS
) -D__KERNEL__
$(LINUX_INCLUDE
) -O2
11 KBUILD_CFLAGS
+= -fno-strict-aliasing
-fPIC
12 KBUILD_CFLAGS
+= -DDISABLE_BRANCH_PROFILING
13 cflags-
$(CONFIG_X86_32
) := -march
=i386
14 cflags-
$(CONFIG_X86_64
) := -mcmodel
=small
15 KBUILD_CFLAGS
+= $(cflags-y
)
16 KBUILD_CFLAGS
+= -mno-mmx
-mno-sse
17 KBUILD_CFLAGS
+= $(call cc-option
,-ffreestanding
)
18 KBUILD_CFLAGS
+= $(call cc-option
,-fno-stack-protector
)
20 KBUILD_AFLAGS
:= $(KBUILD_CFLAGS
) -D__ASSEMBLY__
23 LDFLAGS
:= -m elf_
$(UTS_MACHINE
)
26 hostprogs-y
:= mkpiggy
27 HOST_EXTRACFLAGS
+= -I
$(srctree
)/tools
/include
29 vmlinux-objs-y
:= $(obj
)/vmlinux.lds
$(obj
)/head_
$(BITS
).o
$(obj
)/misc.o \
30 $(obj
)/string.o
$(obj
)/cmdline.o \
31 $(obj
)/piggy.o
$(obj
)/cpuflags.o
33 vmlinux-objs-
$(CONFIG_EARLY_PRINTK
) += $(obj
)/early_serial_console.o
34 vmlinux-objs-
$(CONFIG_RANDOMIZE_BASE
) += $(obj
)/aslr.o
36 $(obj
)/eboot.o
: KBUILD_CFLAGS
+= -fshort-wchar
-mno-red-zone
38 vmlinux-objs-
$(CONFIG_EFI_STUB
) += $(obj
)/eboot.o
$(obj
)/efi_stub_
$(BITS
).o
40 $(obj
)/vmlinux
: $(vmlinux-objs-y
) FORCE
44 OBJCOPYFLAGS_vmlinux.bin
:= -R .comment
-S
45 $(obj
)/vmlinux.bin
: vmlinux FORCE
46 $(call if_changed
,objcopy
)
48 targets
+= $(patsubst $(obj
)/%,%,$(vmlinux-objs-y
)) vmlinux.bin.
all vmlinux.relocs
50 CMD_RELOCS
= arch
/x86
/tools
/relocs
51 quiet_cmd_relocs
= RELOCS
$@
52 cmd_relocs
= $(CMD_RELOCS
) $< > $@
;$(CMD_RELOCS
) --abs-relocs
$<
53 $(obj
)/vmlinux.relocs
: vmlinux FORCE
54 $(call if_changed
,relocs
)
56 vmlinux.bin.all-y
:= $(obj
)/vmlinux.bin
57 vmlinux.bin.all-
$(CONFIG_X86_NEED_RELOCS
) += $(obj
)/vmlinux.relocs
59 $(obj
)/vmlinux.bin.gz
: $(vmlinux.bin.all-y
) FORCE
60 $(call if_changed
,gzip
)
61 $(obj
)/vmlinux.bin.bz2
: $(vmlinux.bin.all-y
) FORCE
62 $(call if_changed
,bzip2
)
63 $(obj
)/vmlinux.bin.lzma
: $(vmlinux.bin.all-y
) FORCE
64 $(call if_changed
,lzma
)
65 $(obj
)/vmlinux.bin.xz
: $(vmlinux.bin.all-y
) FORCE
66 $(call if_changed
,xzkern
)
67 $(obj
)/vmlinux.bin.lzo
: $(vmlinux.bin.all-y
) FORCE
68 $(call if_changed
,lzo
)
69 $(obj
)/vmlinux.bin.lz4
: $(vmlinux.bin.all-y
) FORCE
70 $(call if_changed
,lz4
)
72 suffix-
$(CONFIG_KERNEL_GZIP
) := gz
73 suffix-
$(CONFIG_KERNEL_BZIP2
) := bz2
74 suffix-
$(CONFIG_KERNEL_LZMA
) := lzma
75 suffix-
$(CONFIG_KERNEL_XZ
) := xz
76 suffix-
$(CONFIG_KERNEL_LZO
) := lzo
77 suffix-
$(CONFIG_KERNEL_LZ4
) := lz4
79 RUN_SIZE
= $(shell $(OBJDUMP
) -h vmlinux | \
80 perl
$(srctree
)/arch
/x86
/tools
/calc_run_size.pl
)
81 quiet_cmd_mkpiggy
= MKPIGGY
$@
82 cmd_mkpiggy
= $(obj
)/mkpiggy
$< $(RUN_SIZE
) > $@ ||
( rm -f
$@
; false
)
85 $(obj
)/piggy.S
: $(obj
)/vmlinux.bin.
$(suffix-y
) $(obj
)/mkpiggy FORCE
86 $(call if_changed
,mkpiggy
)